Program 1

Question

Implement a shell program to find and display the largest and smallest of three numbers.

Code

#!/bin/bash

echo "Please enter three numbers"
read x
read y
read z

if [ $x -ge $y ] && [ $x -ge $z ]; then
    echo "$x is the largest number"
elif [ $y -ge $x ] && [ $y -ge $z ]; then
    echo "$y is the largest number"
else
    echo "$z is the largest number"
fi

if [ $x -lt $y ] && [ $x -lt $z ]; then
    echo "$x is the smallest number"
elif [ $y -lt $x ] && [ $y -lt $z ]; then
    echo "$y is the smallest number"
else
    echo "$z is the smallest number"
fi

Output

Please enter three numbers
6
7
3
7 is the largest number
3 is the smallest number

Summary

This script finds and displays the largest and smallest numbers among three given numbers. It uses conditional statements to determine the largest and smallest values.